In　the　past　few　years,　environmental　and　energy　challenges　arising　from　extensive　burning　of　fossil　fuels　and　CO2　emission　have　become　the　increasingly　severe　issue.　One　effective　solution　to　address　these　problems　is　the　reduction　of　CO2　into　valuable　solar　fuels　such　as　CO,　CH4,　and　HCO2H　through　the　semiconductor-based　photocatalysis　technology.　Metal　halide　perovskites　quantum　dots　(MHPs　QDs)　represent　a　new　generation　of　photosensitizers　that　possess　excellent　photoelectric　properties　and　have　been　attracting　enormous　attention　in　the　field　of　photocatalytic　CO2　reduction.　This　review　provides　a　concise　introduction　on　different　types　and　preparation　methods　of　MHPs　QDs　and　discusses　the　specific　applications　especially　photocatalytic　CO2　reduction　mechanism　of　MHPs　QDs.　Furthermore,　future　opportunities　and　challenges　for　constructing　high-performance　MHPs　QDs-based　photocatalysts　are　further　elucidated.　We　anticipate　that　our　review　could　provide　enriched　information　on　the　photocatalytic　application　of　MHPs　QDs　toward　solar-to-fuel　conversion.